I think weblogs should offer lists of ambient information: books you're reading, movies you're seeing, food you're enjoying, places you're going, mountains you're climbing.
These lists are interesting to readers. They may be useful to web applications and consolidators. They are also powerful ways for the writer to think about what they're doing and to reflect on how they're spending their time and their energy.
Jason Kottke's newly redesigned weblog looks very much like it always has, but now it has a nice list of recent movies.